It is possible that the fading of koi fish will return to normal. There are many reasons for fading. If it is because of previous dyeing, it will definitely not recover. However, if it is temporarily faded due to other reasons, such as environmental changes, water quality fluctuations and other reasons, it can be slowly recovered by stabilizing the environment. In addition, we should pay attention to supplementing nutrition, provide proper light at ordinary times, and plant some aquatic plants, which is also helpful for its recovery.

1. Increase light: Koi can't grow without light, and insufficient light will lead to metabolic disorder and fading. Usually, it needs to be supplemented with light. If it is inconvenient to irradiate natural light, it can be supplemented manually. Use incandescent lamps, LED lamps and other lamps for supplementary illumination.

2. Supplemental nutrition: Not only fish food but also animal feed is needed to raise koi fish. If animal feed is not fed, koi will suffer from malnutrition and fade slowly. Generally, it is fed twice a week. In the choice of feed, red worms, earthworms, shrimps and other insects can be used. Every year from June to September, the appetite of koi will increase. At this stage, you can eat once a day, and the feeding time is morning or evening.

3. Planting aquatic plants: If the water in which koi is cultivated is too clear and there is nothing in the water, koi may fade. In view of this situation, add colored things, such as aquatic plants, ceramsite and so on, to the fish tank for breeding koi fish. Try to improve the natural environment and let koi adapt slowly, so that the color of koi will change back slowly.